Trust in Transparency! · Presentation for the 48th Swiss LCA Discussion Forum Zürich, 2012.06.13....
Transcript of Trust in Transparency! · Presentation for the 48th Swiss LCA Discussion Forum Zürich, 2012.06.13....
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Swiss Centre For Life CycleInventories
Trust in Transparency!slide 2
Presentation for the 48th Swiss LCA Discussion Forum
Zürich, 2012.06.13.
Bo Weidema
ecoinvent Centre
ecoinvent v3 – new dimensions for international LCI databases
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Swiss Centre For Life CycleInventories
Introducing the new dimensions
• New dimensions in system modelling
• New mathematical dimensions
• New dimensions of flows
• New dimensions in size
• New geographical dimensions
• New dimensions in data supply
Trust in Transparency!slide 3
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Swiss Centre For Life CycleInventories
Trust in Transparency!slide 4
New dimensions in system modelling
One simple, unlinked system of datasets
Mo
cc
m
Several models withoutconstraints, using
different allocationproperties
True value
Revenue
(physical)
Several models with different constraints,
using substitution
Consequential ILCD A: (ILCD B): All Only by-product
constraints constraints
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Swiss Centre For Life CycleInventories
New mathematical dimensions
Trust in Transparency!slide 5
Amount Formula Explanation
Parameters
Variable names can be used in formulas, e.g. to express how in combined
production an exchange is physically related to a (co-)product output
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Swiss Centre For Life CycleInventories
New dimensions of flows
Trust in Transparency!slide 6
Previously one-dimensional: Only one amount and one unit
Now: Unlimited number of properties, e.g. dry mass, carbon,…
Balances can be calculated for each property
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Swiss Centre For Life CycleInventories
New dimensions in size
• Above 9000 datasets (more than double from v2.2)
• Approx. 6000 transforming activities
• Approx. 3000 products (and therefore market activities)
• > 5000 global datasets and > 3000 local
• Approx. 300 geographical child datasets
• Building on and expanding existing work, rather than starting
from scratch
Trust in Transparency!slide 7
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Swiss Centre For Life CycleInventories
New geographical dimensions
• Towards a truly global database:
– global datasets required for every locally implemented activity
– global market datasets for every product
– cooperation with local data networks
• Parent/Child functionality to make maintenance of large
amounts of local datasets easier
• Geographies now defined with GIS coordinates:
– automatic linking of supply chains using local markets
– option to automate site-dependent impact assessment
Trust in Transparency!slide 8
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Swiss Centre For Life CycleInventories
New dimensions in data supply
• Decentralisation of data supply
• More central data additions and consistency checks
Trust in Transparency!slide 9
New dimensions
Data providers
Central additions
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Swiss Centre For Life CycleInventories
New dimensions in data supply
• Decentralisation of data supply
• More central data additions and consistency checks
Not a contradiction:
– more data decentralized providers, but also
– limiting demand on data providers for data they may not have: o Who produces the inputs?
o What allocation factors to apply?
o Is my output a by-product or a waste?
o What is the production and consumption mix?
o What is the price of the products?
o What is the elemental composition?
o What is the transport distance and mode?
o What is the amount and type of packaging? Trust in Transparency!slide 10
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Swiss Centre For Life CycleInventories
New dimensions in data supply
• So more and more of data are or will be supplied central
projects or routines, while still being editable by individual
data providers.
• Both these trends are likely to increase in the future:
– Crowd sourcing: More and more people involved in data supply and editing through increasingly easy tools
– Cross-cutting data complementation, e.g. for consistency in reporting of toxic emissions, or adding new exchanges such as water, noise and social indicators
Trust in Transparency!slide 11
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Swiss Centre For Life CycleInventories- Expanding the dimensions for international LCI
databases
Trust in Transparency!slide 12
Welcome to your new ecoinvent